Earthquake · reviewed by a seismologist
M 1.8md
3 km NNE of Tumbling Shoals, Arkansas
- When
- Magnitude
- M 1.8 (md)
- Depth
- 9.1 km below the surface
- Felt
- 1 report · strongest reported intensity I
- Nearest
- Cleburne County, 5 km WNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 260 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.
How big was it?
This earthquake released about 13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
- Magna, Utah 2020 M 5.7 840,000× the energy of this one
- Around the size people start to feel M 3.0 75× the energy of this one
- This earthquake M 1.8 about 13 lb of TNT
Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.
Where
Epicentre 35.5750, -91.9542. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Cleburne County, AR | 5 km (3 mi) | ESE of here | earthquakes near Cleburne County |
| Stone County, AR | 36 km (22 mi) | SSE of here | earthquakes near Stone County |
| Independence County, AR | 40 km (25 mi) | WSW of here | earthquakes near Independence County |
| White County, AR | 40 km (25 mi) | NNW of here | earthquakes near White County |
| Van Buren County, AR | 51 km (32 mi) | E of here | earthquakes near Van Buren County |
| Izard County, AR | 58 km (36 mi) | S of here | earthquakes near Izard County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
6 earthquakes have been recorded within 50 km since this one.
- 1.7 3 km NW of Mount Pleasant, Arkansas
- 1.8 3 km NW of Mount Pleasant, Arkansas
- 2.4 4 km WNW of Mount Pleasant, Arkansas
- 2.1 3 km NW of Mount Pleasant, Arkansas
- 2.3 13 km SSW of Pleasant Plains, Arkansas
- 2.4 5 km WSW of Southside, Arkansas
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.